Name: 徐熙媛 Xu Xiyuan

| English Name: Barbie Hsu – Barbie Xu
| Nicknames: 姍姍 (San San/Shan Shan), 大S (Big S)
| Birthdate: 1976-Oct-06
| Birthplace: Shandong, China
| Profession: Actress, Host, Singer
| Star sign: Libra
| Height: 163cm
| Weight: 44kg
| Blood Type: B
| Family: Sister Dee Hsu
| Languages Spoken: Mandarin Chinese, Japanese, Korean, English
| Singing Duo: ASOS

Barbie Hsu Hsi Yuan (Chinese: 徐熙媛; pinyin: Xu Xiyuan; name also transliterated as Barbie Xu) is a Taiwanese actress and singer. She is most well known for her role in Taiwanese dramas, especially Meteor Garden, a Japanese manga adaption that propelled her to fame. She also acted in movies, her first being the Chinese movie The Ghost Inside. Barbie has also appeared in the Taiwanese series Mars with Vic Zhou. Barbie also had a singing career prior to her acting career. She was in a duo group called “S.O.S.” (Sisters of Shu) with her sister Dee Hsu. Their last album was called Abnormal Girls, so from then on, they called themselves ASOS (Abnormal Sisters of Shiu).